Hot-vapor generator.



W. W. KESTER.

HOT VAPOR GENERATOR.

APPLICATION FILED APR.15. 19H}.

Patented Feb. 4, 1919.

F/eJ.

INVENTOR I WILLARD W KESTER av WILLARD W. KESTER, 013 LOS ANGELES, CALIFORNIA.

HOT-VAPOR GENERATOR.

Specification of Letters Patent.

Patented Feb. 4, 19119.

Application filed April 15, 1918. Serial No. 228,771.

' To all whom it may concern:

Be it known that I, WILLARD W. Knsrnn, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Hot-Vapor Generators, of which the following is a specification. i 1

' My object is to make a hot vapor generator for use in killing gophers, rats, squirrels and the like, by forcing the vapor into the holes or dens. My vapor generator may also be used for fumigating dwellings and the like, burning stumps of trees and testing irrigation canals.

My invention consists in the construction and arrangements of parts hereinafter shown and described.

Figure 1 is a front elevation of ahot vapor generator embodyingthe principles of my invention and looking in the direction indicated by the arrow 1 in Fig. 2.

Fig. 2 is a side elevation looking in the direction indicated by the arrow 2 in Fig. 1. Fig. 3 is an enlarged fragmentary sectional detail on a plane parallel with Fig. 2 and on the line 3-3 of Fig. 1.

Fig. 4 is a fragmentary horizontal sectional detail on the line 4-4 of Fig. 2 and looking downwardly.

The base 1 which is made of sheet iron and has an inclined top'2, ends 3 supporting the ends of the top and a high front'wall 4 and a low rear wall 5 supporting the'sides of the top. Air holes 6 are formed through the walls 3, 4 and 5. A pipe nipple 7 has a flange 8 upon its lower end and said pipe nipple is inserted upwardly through the top 2. A baflle plate 9 is inserted upwardly against the flange 8 and secured in place by rivets 10, to hold the nipple rigidlvin place. A circular opening 11 is formed through the baffle 10, and a burner is mounted centrally in the opening 11, said burner comprising a circular cup 12, a pad of asbestos 13 against the inner side of the bottom of the cup, a washer 14 upon the pad, a crossbar 15 under the cup and a bolt 16 inserted downwardly through the washer 14, pad 13, cup 12 and cross-bar 15. The ends of the cross-bar 15 are secured to the bafile 9; said cross-bar extending diametrically across the hole 11. Arms 17 and 18 are secured to the end pieces 3 at their highest points and extend upwardly a considerable distance. Tanks 19 and 20 are mounted'between the upper ends of the arms 17 and 18 and a bail 21 connects the upper ends of the arms, for carrying the device. The tanks 19 and 20 are built together, there being a partition 20 for separating the two chambers of the tanks.

The tank 19 is adapted for carrying a supply of fuel oil, such as'kerosene. A needle valve 22 leads from the bottom of the tank and a pipe 23' leads from the needle valve and discharges into the cup 12 upon the asbestos pad 13.

The smoke stack 24 fits upon the nipple 7, there being registering slots 25 and 26 in the nipple and smoke stack. The generator 27 is centrally located in the lower end of the smoke stack 24, said generator being an annular body having a chamber 28 and a central opening 29. The feed pipe 30 is tapped into a reducer bushing 30 and the bushing is tapped into the lower end of the generator and the feed pipe 30 extends through the slots 25 and 26. The check valve 31 is fixed upon the feed pipe 30. An elbow 32 is screwed into the check valve. A regulating valve 33 is screwed into the elbow and connected to the bottom of the tank 20. The tank 20 is adapted to contain suitable distillate oil for producing a vapor for destroying the gophers, squirrels, rats and any burrowing rodents, or any other volatile liquid suitable for generating a vapor for fumigating and the hke.

A nipple 34 is tapped into a reducer bushing 34 and the bushing is tapped into the generator 27 at the top of the chamber 28. A cap 35 is screwed uponthe nipple and has a discharge orifice 36, thereby producing a V The nee 1e valve 22 is operated to allow oil to run into the cup 12. The oil is lighted and burns upwardly against the bottom of the generator 27 and through the opening 29 and around the generator within the smoke stack. The valve 33 is opened to fill the generator 27 to the desired extent with the vapor producing oil and as the generator becomes hot, the vapor produced will be discharged through the orlfice 36 and into the pipe 37 and into the gopher hole or the like. As the pressure increases in the generator 27 the check valve 31 will hold and the pressure will be directed through the nozzle.

My apparatus may also be used for fumigating trees, dwellings or chicken houses, and for general purposes, wherever it is desired to generate quickly a suitable vapor. For instance, it may be used for burning stumps. In the last case, an inflammable vapor is generated which is ignited, and which burns like a torch, quickly reducing the stump. In testing irrigation canals, the vapor may be injected into cracks or leaks, and the extent of the same may be easily as certained by the vapor or fumes issuing from the ground.

Various changes may be made in the details of construction without departing from the spirit of my invention, as claimed.

I claim:

1. A vapor generator for killing gopher-s and the like, "comprising an inclined sheet iron top, end pieces supporting the ends of the top,'a high front wall extending from one side of the top, a lower rear wall extending from the other side of the top; there being air holes through the walls and a pipe hole through the top; a pipe nipple inserted upwardly through the pipe hole and having a flange forminga stop, a baflle plate inserted upwardly against the flange and secured to the top; there being a circular opening at the center of the baiile plate; and a burner mounted centrally in the opening; said burner comprising a circular cup, a pad of asbestos upon the bottom of the cup, a washer upon the pad, a cross-bar under the cup, and a bolt inserted downwardly through they washer, pad, cup and crossbar; said cross-bar being attached to the bafile plate to support the burner.

2. A vapor generator-tor killing gophers and the like, comprising a base having a pipe opening, a pipe nipple inserted upwardly through the pipe opening and having a flange engaging the base, a battle plate inserted upwardly against the flange and se cured to the base and having a circular opening, a cup burner mounted in the circular opening, means for supplying liquid fuel to the burner, a smoke stack mounted upon the nipple; there being registering slots extending downwardly from the upper end Copiee of this patent may be obtained for of the nipple and upwardly from the lower end of the smoke stack; a generator mounted in the smoke stack and having a feed pipe extending through the registering slots and a discharge pipe extending through the op posite side of the smoke stack, a tank connected to the feed pipe, and a nozzle upon the discharge pipe.

3. A vapor generator for killing gophers and the like, comprising a base having a pipe opening, a pipe nipple insertedupwardly through the pipe opening and hav ing a flange engagingthe base, a baflle plate inserted upwardly against the flange and secured to the base and having a circular opening, a cup burner mounted in the circular opening, means for supplying liquid fuel to the burner, a smoke stack mounted upon the nipple; a generator mounted in the smoke stack and havin a feed pipe extending through one side ot the smoke stack and a discharge pipe extending through the opposite side oi -the smoke stack, a tank connected to the feed pipe, a nozzle upon the discharge pipe, and a flexible vapor pipe pushed over the nozzle and held in place by a hook and eye.

4:. A vapor generator for killing gophers and the like, comprising a base having an inclined top; there being a pipe hole through the top; a pipe nipple inserted upwardly through the pipe hole-and having a flange engaging the top, abafiie plate inserted upwardly against the flange and secured to the top, a cup burner mounted upon the bafiie plate, a smoke stack mounted upon the pipe nipple, a generator in the smoke stack, a supply pipe connected to one side of the generator, a discharge pipe connected to the other side'ot' the generator, arms extending upwardly from the base, a fuel'tank mounted upon the arms and connected to the burner, a generating liquid tank mounted on the arms and connected to the supply pipe, and a flexible vapor hose connected to the discharge pipe.

In testimony whereof I have signed my name to this specification,

WILLARD W; KE STER.

five cents each, by addressing the Commissioner of'Patente.

Washington, D. 0." 

